2002 6.0 Replaced BY GM

[BOWTIE 3]

My brother-in-law in Oregon has been notified that GM is going to replace the 6.0 in his 2002 Silverado EC, 2500HD, 4WD, about 30,000 miles. It has a knock AFTER reaching operating temperature. They said it is a cam-related problem. Early-on he had complained about the CSK and was given a 100,000 mile warranty on the engine. Has anyone else had cam-related problems bad enough for a complete engine replacement?

[RyanZ71]

I have yet to hear of Cam related issues on here, but glad GM is doing the right thing there. A little cold start knock is fine, but if its more then that, well I'd be worried.

[Schmids5.3l]

Is he getting a Vortec max, or does it already have a vortec max? (345hp version)

[OUMike]

Is he getting a Vortec max, or does it already have a vortec max? (345hp version)

 

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Likely as not its just the LQ9.

[kdm101]

Is he getting a Vortec max, or does it already have a vortec max? (345hp version)

 

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Likely as not its just the LQ9.

 

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Actually, more likely it's the LQ4. The LQ9 is the more powerful version found in the Escalade, Denali, and Hummers.

 

Still, I can't believe an engine replacement because of a cam? GM's cams never have enough lift to slam the valves into the pistons unless you're overrevving them past the spring's ability to close the valves. The only thing I can think of is the cam timing is way off, but it should run like crap if that's the case.

[OUMike]

Is he getting a Vortec max, or does it already have a vortec max? (345hp version)

 

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Likely as not its just the LQ9.

 

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Actually, more likely it's the LQ4. The LQ9 is the more powerful version found in the Escalade, Denali, and Hummers.

 

Still, I can't believe an engine replacement because of a cam? GM's cams never have enough lift to slam the valves into the pistons unless you're overrevving them past the spring's ability to close the valves. The only thing I can think of is the cam timing is way off, but it should run like crap if that's the case.

 

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haha yea, thats what I meant. Sorry. Interesting case. Are they gonna let you keep the old 6.0? If so that'd be a pretty neat project with a regular cab S10